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Motor with power coupler and manufacturing method thereof

A manufacturing method and connector technology, which is applied in the field of electric motors, can solve problems such as increased contact resistance, heating of the contact part, and rising costs

Active Publication Date: 2011-10-12
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] According to this conventional motor having a power connector, waterproofness can be ensured by using a wiring relay part, and fixing of conductor parts is unnecessary, but the cost increases due to an increase in the number of parts
In addition, in the case of connecting the lead wire and the power connector by contact without using the pins connected by soldering, there is a problem that the contact resistance becomes large, and the contact portion generates heat under a large current.

Method used

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  • Motor with power coupler and manufacturing method thereof
  • Motor with power coupler and manufacturing method thereof
  • Motor with power coupler and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0015] figure 1 It is an explanatory diagram of the configuration of main parts of the electric motor with power coupling according to Embodiment 1 of the present invention. exist figure 1 Among them, the stator 7 has a stator core 7d, a stator winding 7a, and lead wires 2. The stator winding 7a wound on the stator core 7d is connected to the lead wires 2 of the U, V, and W phases at the coil end 7c of the stator winding 7a, and the lead wires 2 are gathered at one point at the lead wire gathering portion 7b.

[0016] The motor frame 9 has a lead-out hole portion 9a through which the lead-out wire 2 is drawn out, and is fixed to the outside of the stator core 7d at a position where the lead-out hole portion 9a faces the lead-wire assembly portion 7b.

[0017] The power connector 1 is a cannon plug, which is composed of a cylindrical part 1d with a terminal 1c and a square flange part 1a, and has four mounting holes 1b on the terminal 1c and the square flange part 1a. Weld a...

Embodiment approach 2

[0034] figure 2 It is an explanatory diagram of the configuration of main parts of the electric motor with the power connector according to Embodiment 2 of the present invention. This embodiment differs from Embodiment 1 in that the power connector is directly attached to the motor frame via a spacer without using a spacer. The structure other than the spacer is basically the same as that of Embodiment 1, and its description is omitted.

[0035] figure 2 Among them, the lead-out hole portion 29 a of the motor bracket 29 is set to be slightly larger than the diameter of the cylindrical portion 21 d of the power connector 21 similarly to the third gasket 24 . By directly attaching the power connector 21 to the motor frame 29 via the third gasket 24, the waterproof function can be ensured, and the size of the motor protruding in the radial direction can be suppressed, thereby achieving miniaturization.

Embodiment approach 3

[0037] Figure 3A It is an explanatory diagram of the configuration of main parts of the electric motor with the power connector according to Embodiment 3 of the present invention. Figure 3B yes Figure 3A Sectional view of 3B-3B.

[0038] In the present embodiment, instead of binding and fixing as in Embodiments 1 and 2, a holding member for accommodating the lead wires is arranged between the inner wall of the motor frame and the stator winding to hold and fix the lead wires. Except for this point, it is basically the same, and its description is omitted.

[0039] Figure 3A , Figure 3B Among them, the lead wire holding member 38 made of synthetic resin has a notch 38a and a protrusion 38b for accommodating the lead wire.

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Abstract

The present invention provides a motor which is provided with a power connector and a manufacturing method thereof, wherein the motor comprises the following components: a stator which connects a leading-out wire on a stator winding that is coiled on the stator iron; a motor frame which is fixed at the external side of stator iron and is provided with a leading-out hole part that leads the leading-out wire out; and the power connector which has a waterproof structure and is connected with the leading-out wire led out from the leading-out hole part through welding. In the motor, the stator is provided with a leading-out wire gathering part of leading-out wire. The leading-out wire is fixed between the leading-out wire gathering part and the leading-out hole part.

Description

technical field [0001] The present invention relates to a motor with a power connector that connects a stator winding and a power connector via a lead wire and a manufacturing method thereof. Background technique [0002] Conventionally, a power connector typified by a cannon plug has generally been used in a waterproof motor. The cannon plug-in is connected to the stator winding by welding through the lead wire, and is screwed on the motor frame through the hollow spacer. [0003] In addition, in order to eliminate the looseness of the lead wires while improving the connection operation between the lead wires and each terminal of the cannon insert, a structure in which the spacer can be attached after the spacer is divided and the lead wires are connected has been proposed. For example, it is disclosed in Japanese Utility Model Laid-Open Publication No. Sho 60-119867. [0004] According to this conventional electric motor with power connector, in order to improve the weld...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K5/22
Inventor 森冈正之松下泰明田村真也
Owner PANASONIC CORP